diff --git a/apps/mobile/components/MessageActionsSheet.tsx b/apps/mobile/components/MessageActionsSheet.tsx
new file mode 100644
index 0000000..0de024f
--- /dev/null
+++ b/apps/mobile/components/MessageActionsSheet.tsx
@@ -0,0 +1,103 @@
+import { Modal, Pressable, StyleSheet, Text } from 'react-native';
+
+import { ReactionStrip } from './ReactionStrip';
+import { colors } from '../theme/colors';
+
+interface Props {
+  visible: boolean;
+  mine: boolean;
+  onClose: () => void;
+  onReact: (emoji: string) => void;
+  onReply: () => void;
+  onDelete: () => void;
+}
+
+// Bottom-sheet-style modal opened on long-press of a message bubble.
+// Contains the reaction quick-strip plus the action rows. The "Löschen"
+// row is hidden for messages not authored by the current user — the
+// server-side trigger would refuse anyway, but trimming UI keeps the
+// surface honest.
+export function MessageActionsSheet({
+  visible,
+  mine,
+  onClose,
+  onReact,
+  onReply,
+  onDelete,
+}: Props) {
+  return (
+    <Modal
+      visible={visible}
+      transparent
+      animationType="fade"
+      onRequestClose={onClose}
+    >
+      <Pressable style={styles.backdrop} onPress={onClose}>
+        <Pressable style={styles.sheet} onPress={() => undefined}>
+          <ReactionStrip
+            onReact={(e) => {
+              onReact(e);
+              onClose();
+            }}
+          />
+          <Action label="Antworten" onPress={() => { onReply(); onClose(); }} />
+          {mine && (
+            <Action
+              label="Löschen"
+              danger
+              onPress={() => { onDelete(); onClose(); }}
+            />
+          )}
+          <Action label="Abbrechen" muted onPress={onClose} />
+        </Pressable>
+      </Pressable>
+    </Modal>
+  );
+}
+
+function Action({
+  label,
+  danger,
+  muted,
+  onPress,
+}: {
+  label: string;
+  danger?: boolean;
+  muted?: boolean;
+  onPress: () => void;
+}) {
+  return (
+    <Pressable
+      onPress={onPress}
+      style={({ pressed }) => [styles.action, pressed && styles.actionPressed]}
+    >
+      <Text style={[styles.actionText, danger && styles.actionDanger, muted && styles.actionMuted]}>
+        {label}
+      </Text>
+    </Pressable>
+  );
+}
+
+const styles = StyleSheet.create({
+  backdrop: {
+    flex: 1,
+    justifyContent: 'flex-end',
+    backgroundColor: 'rgba(0,0,0,0.5)',
+  },
+  sheet: {
+    backgroundColor: colors.surface,
+    borderTopLeftRadius: 16,
+    borderTopRightRadius: 16,
+    paddingBottom: 24,
+  },
+  action: {
+    paddingVertical: 14,
+    paddingHorizontal: 20,
+    borderBottomColor: colors.border,
+    borderBottomWidth: 1,
+  },
+  actionPressed: { backgroundColor: colors.bg },
+  actionText: { color: colors.text, fontSize: 15, fontWeight: '500' },
+  actionDanger: { color: colors.danger },
+  actionMuted: { color: colors.textMuted },
+});